Mr. SmartyPants (post: 1438326) wrote:I think his point being that you can't prove that terrorists were stopped from hijacking planes. Perhaps increased security deterred people from doing so. If so, nobody would know either way.
And I dunno. It's all still fear to me. Privacy, that is. We are, after all, a very fear-driven nation.
Mr. SmartyPants wrote:Ann Coulter makes me want to barf whenever she speaks.
musicaloddball (post: 1438317) wrote:The Tel Aviv Airport hasn't had a successful terrorist attack since the 90's. I'm not terribly familiar with the security procedures there, but I know it does not involve naked body scanners. People who go through the Tel Aviv Airport (in my experience) complain that the security officers are paranoid and confiscate random objects for no reason, but they don't complain about privacy issues. The US could probably take a hint from Israel on this one.
musicaloddball wrote:Also, what has stopped terrorists in the past? Passengers who fought them. We need to stick to what works. Everyone is so focused on keeping the terrorists off the planes, but passengers need to know what to do if a terrorist does end up on the plane.
goldenspines wrote:Its only stealing if you don't get caught.
Edward wrote:I think the biggest concerns with the radiation are pregnant women.
Nate (post: 1438351) wrote:So the radiation exposure is less than that of an x-ray?
Oh geez. This is like the same crap I heard about nuclear power way back with "IF THERE'S A MELTDOWN THE POWER PLANT WILL EXPLODE LIKE A NUCLEAR BOMB!" and thinking that radiation will give you extra eyes or feet or something. People don't understand radiation, they just freak out when they hear about it.
So now, I really don't understand why anyone is complaining about this.
Nate (post: 1438363) wrote:I don't understand the privacy concerns though. Though this seems to be solely an American point of view. I mean England has CCTV cameras installed throughout their cities, that have face recognition and database support to identify people on the streets. They also spend enormous amounts of money on the system. Whether or not this is a good idea or actually helps deter crime is up for debate, but that system would never fly in the US, and not just because of costs or the size of our country either.
Like I said, I just don't get how this is an invasion of privacy.
Nate (post: 1438372) wrote:Yeah that's what I'm saying...it's just an outline of the body and as far as I can tell, the face is blurred. So I don't see how it's an invasion of privacy if there's no identifiable information on the scan...even more so if the public never sees them.
Cognitive Gear wrote:But really, my primary concern is more with the very invasive pat-downs. I don't think that anyone should be forced into a situation in which their "private parts" are going to be felt by a complete stranger.
My secondary concern is that these scanners just simply won't be effective at catching someone intent on highjacking a plane. If someone is smart enough to evade the various intelligence agencies, then they are probably smart enough to think of a way to hide whatever weapon they want to bring.
Nate (post: 1438374) wrote:But how invasive are the patdowns? I got patted down last month, when I had to pick up my mom at the prison because she couldn't drive out (her license was suspended). That was the day I mentioned before, with the huge searches of cars and stuff to make sure no one was bringing drugs or weapons into the prison. I had a patdown. They touched my butt, but not my junk. Is the TSA patdown somehow more invasive than a full police patdown? If so, where's the evidence for it? And I don't count "I went to an airport and they had a more invasive patdown" as evidence, any more than I count "My son had a vaccine and now he's autistic so vaccines cause autism" as evidence.
Nate (post: 1438374) wrote:Okay, granted, but you know what? Locking my door isn't going to be effective at deterring someone who wants to rob my house. They'll just break the window or kick in the door or something. But am I going to get doorknobs with no locks on them? Nope. Am I going to stop locking my doors at night? Nope.
So I don't see how this is an argument against the scanners, unless you want to have lockless doorknobs.
The Red Flags
The physics of these X-rays is very telling: the X-rays are Compton-Scattering off outer
molecule bonding electrons and thus inelastic (likely breaking bonds).
Unlike other scanners, these new devices operate at relatively low beam energies
(28keV). The majority of their energy is delivered to the skin and the underlying
tissue. Thus, while the dose would be safe if it were distributed throughout the volume
of the entire body, the dose to the skin may be dangerously high.
The X-ray dose from these devices has often been compared in the media to the cosmic
ray exposure inherent to airplane travel or that of a chest X-ray. However, this
comparison is very misleading: both the air travel cosmic ray exposure and chest X-
rays have much higher X-ray energies and the health consequences are appropriately
understood in terms of the whole body volume dose. In contrast, these new airport
scanners are largely depositing their energy into the skin and immediately adjacent
tissue, and since this is such a small fraction of body weight/vol, possibly by one to two
orders of magnitude, the real dose to the skin is now high.
In addition, it appears that real independent safety data do not exist. A search,
ultimately finding top FDA radiation physics staff, suggests that the relevant radiation
quantity, the Flux [photons per unit area and time (because this is a scanning device)]
has not been characterized. Instead an indirect test (Air Kerma) was made that
emphasized the whole body exposure value, and thus it appears that the danger is low
when compared to cosmic rays during airplane travel and a chest X-ray dose.
In summary, if the key data (flux-integrated photons per unit values) were available, it
would be straightforward to accurately model the dose being deposited in the skin and
adjacent tissues using available computer codes, which would resolve the potential
concerns over radiation damage.
Our colleagues at UCSF, dermatologists and cancer experts, raise specific important
concerns:
• A) The large population of older travelers, >65 years of age, is particularly at
risk from the mutagenic effects of the X-rays based on the known biology of
melanocyte aging.
• B) A fraction of the female population is especially sensitive to mutagenesis-
provoking radiation leading to breast cancer. Notably, because these women,
who have defects in DNA repair mechanisms, are particularly prone to cancer,
X-ray mammograms are not performed on them. The dose to breast tissue
beneath the skin represents a similar risk.
• C) Blood (white blood cells) perfusing the skin is also at risk.
• D) The population of immunocompromised individuals--HIV and cancer
patients (see above) is likely to be at risk for cancer induction by the high skin
dose.
• E) The risk of radiation emission to children and adolescents does not appear to
have been fully evaluated.
• F) The policy towards pregnant women needs to be defined once the theoretical
risks to the fetus are determined.
• G) Because of the proximity of the testicles to skin, this tissue is at risk for
sperm mutagenesis.
• H) Have the effects of the radiation on the cornea and thymus been determined?
Moreover, there are a number of ‘red flags’ related to the hardware itself. Because this
device can scan a human in a few seconds, the X-ray beam is very intense. Any glitch
in power at any point in the hardware (or more importantly in software) that stops the
device could cause an intense radiation dose to a single spot on the skin. Who will
oversee problems with overall dose after repair or software problems? The TSA is
already complaining about resolution limitations; who will keep the manufacturers
and/or TSA from just raising the dose, an easy way to improve signal-to-noise and get
higher resolution? Lastly, given the recent incident (on December 25th), how do we
know whether the manufacturer or TSA, seeking higher resolution, will scan the groin
area more slowly leading to a much higher total dose?
After review of the available data we have already obtained, we suggest that additional
critical information be obtained, with the goal to minimize the potential health risks of
total body scanning. One can study the relevant X-ray dose effects with modern
molecular tools. Once a small team of appropriate experts is assembled, an
experimental plan can be designed and implemented with the objective of obtaining
information relevant to our concerns expressed above, with attention paid to completing
the information gathering and formulating recommendations in a timely fashion.
blkmage wrote:And I believe you're missing the point on those leaked scans.
Anyhow, the British database surveillance thing isn't a perfect example.
And, I'd rather you avoid comparing my views with those of crazy people, because while fluoridation and CIA AIDS are demonstrably false, this is not quite as simple.
Nate (post: 1438385) wrote:Okay, I'll admit that. Fair enough. I won't make statements like that in the future. Though I still stand behind the fact that fearing people will be able to get naked photos of you because you went through an airport scanner is complete and utter paranoia.
Nate (post: 1438363) wrote:Like I said, I just don't get how this is an invasion of privacy.
Nate (post: 1438407) wrote:I thought you couldn't use phones while you were flying anyway.
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